This session parameter is used to assign attributes for dynamic attribute field display.
| Possible settings | See DY Parameter Syntax. | |
|---|---|---|
| Default setting | none | |
| Applicable statements | Parameter may be specified at statement level and/or at element level. | |
| Applicable command | none | |
Special identification characters (escape characters) are used to indicate the beginning and end of attribute definitions.
An alphanumeric field which is processed with an
INPUT,
DISPLAY,
WRITE or
PRINT statement, and
which contains escape characters, is split into subfields at the escape
character position. The corresponding attribute is then assigned to the
subfield. A blank is substituted for the escape character.
For a part of a field for which a DY
specification applies, the current field presentation and color is changed to
what is newly defined in the DY entry. If the
DY segment does not contain a new setting for
the
(means no B, C, D,
I, N, U, V), the attribute
active for the complete field remains in effect, regardless of whether
originally derived from a static setting (for example, AD=I) or
from a control variable (for example, CV=#C).
(means no BL, GR, NE,
PI, RE, TU, YE), the color
is set to what is statically assigned to the field (with CD=..),
without considering a color which was possibly set via a control variable
(CV=..). If the field has no static (CD=..)
assignment, the color information is completely removed from the field segment
affected by the DY manipulation.
The following topics are covered below:
DY={{escape-character1}
[color-attribute]
[i/o-characteristics]
[field-representation-attribute]
} ... {escape-character2}
|
The possible settings are explained below.
An escape character which denotes the beginning of the attribute
definition. Any special character or a hexadecimal number preceded by an
apostrophe ('xx) may be used.
The color attribute to be assigned. See also session parameter
CD (color
definition).
BL |
blue |
GR |
green |
NE |
neutral |
PI |
pink |
RE |
red |
TU |
turquoise |
YE |
yellow |
| Value | Meaning |
|---|---|
P |
Subfield is to be write-protected. |
A P may be specified to make the subfield write-protected.
See also session parameter AD (attribute
definition).
Additional attributes to be assigned. See also session parameter
AD (attribute
definition).
| Value | Meaning |
|---|---|
B |
blinking (*) |
C |
cursive/italic (*) |
D |
default intensity |
I |
intensified |
N |
non-display |
U |
underlined |
V |
reverse video (*) |
* The field representation attributes marked with an asterisk (*) require corresponding hardware features, and will be ignored at runtime if these features are not available.
An escape character which denotes the end of the attribute definition.
Any special character (c) or a hexadecimal number
preceded by an apostrophe ('xx) may be
used.
You may specify up to eight escape sequences (escape characters and attributes) before the character indicating the end of the attribute definitions.
DY=<U>
The text string:
THIS <is> UNDERLINED
is printed as:
THIS is UNDERLINED
DY=<BL|RE/GR>
Assigns:
Blue to <
Red to |
Green to /
> switches back to the initial field color.
DY=<P>;
The text string:
Do not overwrite <this>
is printed as:
Do not overwrite this
(where this is protected)
